The U.S. government's covert national security electronic surveillance program, known as PRISM, has heightened the public's very appropriate concerns over privacy. And that has folks flocking to private search engine DuckDuckGo.

The search engine, which vows not to track its users, has experienced record traffic in the past week as the news story revealing the existence of the PRISM program continues to unfold.

DuckDuckGo is a search engine like Google. But unlike Google, the company doesn't track users. Which means, DuckDuckGo doesn't know who its users are and the site doesn't tie their searches together. The company also vows to not put users in a filter bubble.

Gabriel Weinberg (pictured) founded DuckDuckGo in 2008 in an effort to create a better search experience. Meaning, less spam, less intrusive advertising and better instant answers.

The company backed into the issue of privacy after Weinberg was asked about it and thought it was "a little creepy that a search engine could know so much about you and also didn't want to hand over information to governments," Weinberg told Bloomberg in a June 10 interview.